/**
* Reads next record, hides the random access of different regions from the user.
*/
bool BAMOrderedReader::read(bam1_t *s)
{
if (random_access_enabled)
{
while(true)
{
if (itr && bam_itr_next(sam, itr, s)>=0)
{
return true;
}
else if (!initialize_next_interval())
{
return false;
}
}
}
else
{
if (bam_read1(sam->fp.bgzf, s)>=0)
{
//todo: filter via interval tree
//if found in tree, return true else false
return true;
}
else
{
return false;
}
}
return false;
};
// This function reads a BAM alignment from one BAM file.
static int read_bam(void *data, bam1_t *b) // read level filters better go here to avoid pileup
{
aux_t *aux = (aux_t*)data; // data in fact is a pointer to an auxiliary structure
int ret = aux->iter? bam_iter_read(aux->fp, aux->iter, b) : bam_read1(aux->fp, b);
if ((int)b->core.qual < aux->min_mapQ) b->core.flag |= BAM_FUNMAP;
return ret;
}
// currently, this function ONLY works if each read has one hit
void bam_mating_core(bamFile in, bamFile out)
{
bam_header_t *header;
bam1_t *b[2];
int curr, has_prev, pre_end = 0, cur_end;
kstring_t str;
str.l = str.m = 0; str.s = 0;
header = bam_header_read(in);
bam_header_write(out, header);
b[0] = bam_init1();
b[1] = bam_init1();
curr = 0; has_prev = 0;
while (bam_read1(in, b[curr]) >= 0) {
bam1_t *cur = b[curr], *pre = b[1-curr];
if (cur->core.tid < 0) continue;
cur_end = bam_calend(&cur->core, bam1_cigar(cur));
if (cur_end > (int)header->target_len[cur->core.tid]) cur->core.flag |= BAM_FUNMAP;
if (cur->core.flag & BAM_FSECONDARY) continue; // skip secondary alignments
if (has_prev) {
if (strcmp(bam1_qname(cur), bam1_qname(pre)) == 0) { // identical pair name
cur->core.mtid = pre->core.tid; cur->core.mpos = pre->core.pos;
pre->core.mtid = cur->core.tid; pre->core.mpos = cur->core.pos;
if (pre->core.tid == cur->core.tid && !(cur->core.flag&(BAM_FUNMAP|BAM_FMUNMAP))
&& !(pre->core.flag&(BAM_FUNMAP|BAM_FMUNMAP))) // set TLEN/ISIZE
{
uint32_t cur5, pre5;
cur5 = (cur->core.flag&BAM_FREVERSE)? cur_end : cur->core.pos;
pre5 = (pre->core.flag&BAM_FREVERSE)? pre_end : pre->core.pos;
cur->core.isize = pre5 - cur5; pre->core.isize = cur5 - pre5;
} else cur->core.isize = pre->core.isize = 0;
if (pre->core.flag&BAM_FREVERSE) cur->core.flag |= BAM_FMREVERSE;
else cur->core.flag &= ~BAM_FMREVERSE;
if (cur->core.flag&BAM_FREVERSE) pre->core.flag |= BAM_FMREVERSE;
else pre->core.flag &= ~BAM_FMREVERSE;
if (cur->core.flag & BAM_FUNMAP) { pre->core.flag |= BAM_FMUNMAP; pre->core.flag &= ~BAM_FPROPER_PAIR; }
if (pre->core.flag & BAM_FUNMAP) { cur->core.flag |= BAM_FMUNMAP; cur->core.flag &= ~BAM_FPROPER_PAIR; }
bam_template_cigar(pre, cur, &str);
bam_write1(out, pre);
bam_write1(out, cur);
has_prev = 0;
} else { // unpaired or singleton
pre->core.mtid = -1; pre->core.mpos = -1; pre->core.isize = 0;
if (pre->core.flag & BAM_FPAIRED) {
pre->core.flag |= BAM_FMUNMAP;
pre->core.flag &= ~BAM_FMREVERSE & ~BAM_FPROPER_PAIR;
}
bam_write1(out, pre);
}
} else has_prev = 1;
curr = 1 - curr;
pre_end = cur_end;
}
if (has_prev) bam_write1(out, b[1-curr]);
bam_header_destroy(header);
bam_destroy1(b[0]);
bam_destroy1(b[1]);
free(str.s);
}
void edwBamToWig(char *input, char *output)
/* edwBamToWig - Convert a bam file to a wig file by measuring depth of coverage, optionally adjusting hit size to average for library.. */
{
FILE *f = mustOpen(output, "w");
/* Open file and get header for it. */
samfile_t *sf = samopen(input, "rb", NULL);
if (sf == NULL)
errnoAbort("Couldn't open %s.\n", input);
bam_header_t *head = sf->header;
if (head == NULL)
errAbort("Aborting ... Bad BAM header in file: %s", input);
/* Scan through input populating genome range trees */
struct genomeRangeTree *grt = genomeRangeTreeNew();
bam1_t one = {};
for (;;)
{
/* Read next record. */
if (bam_read1(sf->x.bam, &one) < 0)
break;
if (one.core.tid >= 0 && one.core.n_cigar > 0)
{
char *chrom = head->target_name[one.core.tid];
int start = one.core.pos;
int end = start + one.core.l_qseq;
if (one.core.flag & BAM_FREVERSE)
{
start -= clPad;
}
else
{
end += clPad;
}
struct rbTree *rt = genomeRangeTreeFindOrAddRangeTree(grt,chrom);
rangeTreeAddToCoverageDepth(rt, start, end);
}
}
/* Convert genome range tree into output wig */
/* Get list of chromosomes. */
struct hashEl *hel, *helList = hashElListHash(grt->hash);
for (hel = helList; hel != NULL; hel = hel->next)
{
char *chrom = hel->name;
struct rbTree *rt = hel->val;
struct range *range, *rangeList = rangeTreeList(rt);
for (range = rangeList; range != NULL; range = range->next)
{
fprintf(f, "%s\t%d\t%d\t%d\n", chrom, range->start, range->end, ptToInt(range->val));
}
}
carefulClose(&f);
}
boolean bamIsSortedByTarget(char *fileName, int maxToCheck)
/* Return TRUE if bam is sorted by target for at least the first bits. */
{
int leftToCheck = maxToCheck;
struct hash *targetHash = hashNew(0);
boolean result = TRUE;
/* Open bam/sam file and set up basic I/O vars on it. */
samfile_t *sf = samopen(fileName, "rb", NULL);
bam_header_t *bamHeader = sf->header;
bam1_t one;
ZeroVar(&one);
int err;
char lastTarget[PATH_LEN] = "";
int lastPos = 0;
/* Loop through while still haven't hit our max and file still has data */
while ((err = bam_read1(sf->x.bam, &one)) >= 0)
{
if (--leftToCheck < 0)
{
break;
}
/* Get target, skipping read if it's not aligned well enough to have a target. */
int32_t tid = one.core.tid;
if (tid < 0)
continue;
char *target = bamHeader->target_name[tid];
int pos = one.core.pos;
/* If we are on same target then make sure we are in ascending order. */
if (sameString(target, lastTarget))
{
if (pos < lastPos)
{
result = FALSE;
break;
}
}
else
{
/* If sorted should not go back to a new chromosome. Use hash to check this */
if (hashLookup(targetHash, target))
{
result = FALSE;
break;
}
hashAdd(targetHash, target, NULL);
safef(lastTarget, sizeof(lastTarget), "%s", target);
}
lastPos = pos;
}
hashFree(&targetHash);
return result;
}
// This function reads a BAM alignment from one BAM file.
static int read_bam(void *data, bam1_t *b) // read level filters better go here to avoid pileup
{
aux_t *aux = (aux_t*)data; // data in fact is a pointer to an auxiliary structure
int ret = aux->iter? bam_iter_read(aux->fp, aux->iter, b) : bam_read1(aux->fp, b);
if (!(b->core.flag&BAM_FUNMAP)) {
if ((int)b->core.qual < aux->min_mapQ) b->core.flag |= BAM_FUNMAP;
else if (aux->min_len && bam_cigar2qlen(&b->core, bam1_cigar(b)) < aux->min_len) b->core.flag |= BAM_FUNMAP;
}
return ret;
}
static bwa_seq_t *bwa_read_bam(bwa_seqio_t *bs, int n_needed, int *n, int is_comp, int trim_qual)
{
bwa_seq_t *seqs, *p;
int n_seqs, l, i;
long n_trimmed = 0, n_tot = 0;
bam1_t *b;
int res;
b = bam_init1();
n_seqs = 0;
seqs = (bwa_seq_t*)calloc(n_needed, sizeof(bwa_seq_t));
while ((res = bam_read1(bs->fp, b)) >= 0) {
uint8_t *s, *q;
int go = 0;
if ((bs->which & 1) && (b->core.flag & BAM_FREAD1)) go = 1;
if ((bs->which & 2) && (b->core.flag & BAM_FREAD2)) go = 1;
if ((bs->which & 4) && !(b->core.flag& BAM_FREAD1) && !(b->core.flag& BAM_FREAD2))go = 1;
if (go == 0) continue;
l = b->core.l_qseq;
p = &seqs[n_seqs++];
p->tid = -1; // no assigned to a thread
p->qual = 0;
p->full_len = p->clip_len = p->len = l;
n_tot += p->full_len;
s = bam1_seq(b); q = bam1_qual(b);
p->seq = (ubyte_t*)calloc(p->len + 1, 1);
p->qual = (ubyte_t*)calloc(p->len + 1, 1);
for (i = 0; i != p->full_len; ++i) {
p->seq[i] = bam_nt16_nt4_table[(int)bam1_seqi(s, i)];
p->qual[i] = q[i] + 33 < 126? q[i] + 33 : 126;
}
if (bam1_strand(b)) { // then reverse
seq_reverse(p->len, p->seq, 1);
seq_reverse(p->len, p->qual, 0);
}
if (trim_qual >= 1) n_trimmed += bwa_trim_read(trim_qual, p);
p->rseq = (ubyte_t*)calloc(p->full_len, 1);
memcpy(p->rseq, p->seq, p->len);
seq_reverse(p->len, p->seq, 0); // *IMPORTANT*: will be reversed back in bwa_refine_gapped()
seq_reverse(p->len, p->rseq, is_comp);
p->name = strdup((const char*)bam1_qname(b));
if (n_seqs == n_needed) break;
}
if (res < 0 && res != -1) err_fatal_simple("Error reading bam file");
*n = n_seqs;
if (n_seqs && trim_qual >= 1)
fprintf(stderr, "[bwa_read_seq] %.1f%% bases are trimmed.\n", 100.0f * n_trimmed/n_tot);
if (n_seqs == 0) {
free(seqs);
bam_destroy1(b);
return 0;
}
bam_destroy1(b);
return seqs;
}
int bam_pad2unpad(bamFile in, bamFile out)
{
bam_header_t *h;
bam1_t *b;
kstring_t r, q;
uint32_t *cigar2 = 0;
int n2 = 0, m2 = 0, *posmap = 0;
h = bam_header_read(in);
bam_header_write(out, h);
b = bam_init1();
r.l = r.m = q.l = q.m = 0; r.s = q.s = 0;
while (bam_read1(in, b) >= 0) {
uint32_t *cigar = bam1_cigar(b);
n2 = 0;
if (b->core.pos == 0 && b->core.tid >= 0 && strcmp(bam1_qname(b), h->target_name[b->core.tid]) == 0) {
int i, k;
unpad_seq(b, &r);
write_cigar(cigar2, n2, m2, bam_cigar_gen(b->core.l_qseq, BAM_CMATCH));
replace_cigar(b, n2, cigar2);
posmap = realloc(posmap, r.m * sizeof(int));
for (i = k = 0; i < r.l; ++i) {
posmap[i] = k; // note that a read should NOT start at a padding
if (r.s[i]) ++k;
}
} else {
int i, k, op;
unpad_seq(b, &q);
if (bam_cigar_op(cigar[0]) == BAM_CSOFT_CLIP) write_cigar(cigar2, n2, m2, cigar[0]);
for (i = 0, k = b->core.pos; i < q.l; ++i, ++k)
q.s[i] = q.s[i]? (r.s[k]? BAM_CMATCH : BAM_CINS) : (r.s[k]? BAM_CDEL : BAM_CPAD);
for (i = k = 1, op = q.s[0]; i < q.l; ++i) {
if (op != q.s[i]) {
write_cigar(cigar2, n2, m2, bam_cigar_gen(k, op));
op = q.s[i]; k = 1;
} else ++k;
}
write_cigar(cigar2, n2, m2, bam_cigar_gen(k, op));
if (bam_cigar_op(cigar[b->core.n_cigar-1]) == BAM_CSOFT_CLIP) write_cigar(cigar2, n2, m2, cigar[b->core.n_cigar-1]);
for (i = 2; i < n2; ++i)
if (bam_cigar_op(cigar2[i]) == BAM_CMATCH && bam_cigar_op(cigar2[i-1]) == BAM_CPAD && bam_cigar_op(cigar2[i-2]) == BAM_CMATCH)
cigar2[i] += cigar2[i-2], cigar2[i-2] = cigar2[i-1] = 0;
for (i = k = 0; i < n2; ++i)
if (cigar2[i]) cigar2[k++] = cigar2[i];
n2 = k;
replace_cigar(b, n2, cigar2);
b->core.pos = posmap[b->core.pos];
}
bam_write1(out, b);
}
free(r.s); free(q.s); free(posmap);
bam_destroy1(b);
bam_header_destroy(h);
return 0;
}
int main(int argc, char** argv)
{
if(argc < 3) {
printf("No input nor output files provided");
return -1;
}
bamFile in = bam_open(argv[1], "r");
bam_header_t* header;
if (in == NULL) {
printf("opening input file failed");
return -1;
}
bam1_t* b = bam_init1();
bamFile out = bam_open(argv[2], "w");
if (out == NULL) {
printf("opening input file failed");
return -1;
}
header = bam_header_read(in);
if(bam_header_write(out, header) < 0) {
printf("writing header failed");
}
long nextPrunedId;
if(!scanf ("%lu", &nextPrunedId)) {
printf("warning: no ids provided");
return -1;
}
long id = 0;
while (bam_read1(in, b) >= 0) {
// write BAM back
if (nextPrunedId != id++) {
bam_write1(out, b);
} else {
// fprintf(stderr, "pruning: id: %lu, pos: %d, length: %d\n", nextPrunedId, b->core.pos, b->core.l_qseq);
if(!scanf ("%lu", &nextPrunedId)) {
break;
}
}
}
// closing all resources
bam_header_destroy(header);
bam_close(in);
bam_close(out);
bam_destroy1(b);
return 0;
}
static inline int TGM_BamInStreamLoadNext(TGM_BamInStream* pBamInStream)
{
// for the bam alignment array, if we need to expand its space
// we have to initialize those newly created bam alignment
// and update the query name hash since the address of those
// bam alignments are changed after expanding
pBamInStream->pNewNode = TGM_BamNodeAlloc(pBamInStream->pMemPool);
if (pBamInStream->pNewNode == NULL)
TGM_ErrQuit("ERROR: Too many unpaired reads are stored in the memory. Please use smaller bin size or disable searching pair genomically.\n");
int ret = bam_read1(pBamInStream->fpBamInput, &(pBamInStream->pNewNode->alignment));
return ret;
}
void convert_bam_to_sam(char* bam_input, char* sam_input) {
int read_bytes;
bam1_t* bam_p = bam_init1();
char* bam_string;
LOG_DEBUG("CONVERT-START: bam to sam\n");
//open BAM file for read
if (time_flag) {
start_timer(t1_convert);
}
bam_file_t* bam_file_p = bam_fopen_mode(bam_input, NULL, "r");
//open SAM file for write, SAM file is a text file!!!
FILE* sam_fd = fopen(sam_input, "w");
if (sam_fd == NULL) {
char log_message[200];
sprintf(log_message, "Error opening file '%.150s' in mode 'r' !!!!!\n", sam_input);
LOG_FATAL(log_message);
}
//header for BAM file has been done in the opening
bam_header_t* bam_header_p = bam_file_p->bam_header_p;
//write header text to SAM file
fprintf(sam_fd, "%s", bam_header_p->text);
//write string alignments to SAM file
while ((read_bytes = bam_read1(bam_file_p->bam_fd, bam_p)) > 0) {
bam_string = bam_format1(bam_header_p, bam_p);
fprintf(sam_fd, "%s\n", bam_string);
free(bam_string); // it was allocated by the sam-tools, we must free it !!
num_alignments++;
}
//close BAM and SAM files, free bam alignment and bam file object
bam_fclose(bam_file_p);
fclose(sam_fd);
bam_destroy1(bam_p);
if (time_flag) {
stop_timer(t1_convert, t2_convert, convert_time);
}
//number_of_batchs = 1, convention value for statistics (not real batch)
number_of_batchs = 1;
LOG_DEBUG("CONVERT-START: bam to sam\n");
}
int bam_pileup_file(bamFile fp, int mask, bam_pileup_f func, void *func_data)
{
bam_plbuf_t *buf;
int ret;
bam1_t *b;
b = bam_init1();
buf = bam_plbuf_init(func, func_data);
bam_plbuf_set_mask(buf, mask);
while ((ret = bam_read1(fp, b)) >= 0)
bam_plbuf_push(b, buf);
bam_plbuf_push(0, buf);
bam_plbuf_destroy(buf);
bam_destroy1(b);
return 0;
}
bam_flagstat_t *bam_flagstat_core(bamFile fp)
{
bam_flagstat_t *s;
bam1_t *b;
bam1_core_t *c;
int ret;
s = (bam_flagstat_t*)calloc(1, sizeof(bam_flagstat_t));
b = bam_init1();
c = &b->core;
while ((ret = bam_read1(fp, b)) >= 0)
flagstat_loop(s, c);
bam_destroy1(b);
if (ret != -1)
fprintf(pysamerr, "[bam_flagstat_core] Truncated file? Continue anyway.\n");
return s;
}
static int mplp_func(void *data, bam1_t *b)
{
extern int bam_realn(bam1_t *b, const char *ref);
extern int bam_prob_realn_core(bam1_t *b, const char *ref, int);
extern int bam_cap_mapQ(bam1_t *b, char *ref, int thres);
mplp_aux_t *ma = (mplp_aux_t*)data;
int ret, skip = 0;
do {
int has_ref;
ret = ma->iter? bam_iter_read(ma->fp, ma->iter, b) : bam_read1(ma->fp, b);
if (ret < 0) break;
if (b->core.tid < 0 || (b->core.flag&BAM_FUNMAP)) { // exclude unmapped reads
skip = 1;
continue;
}
if (ma->conf->bed) { // test overlap
skip = !bed_overlap(ma->conf->bed, ma->h->target_name[b->core.tid], b->core.pos, bam_calend(&b->core, bam1_cigar(b)));
if (skip) continue;
}
if (ma->conf->rghash) { // exclude read groups
uint8_t *rg = bam_aux_get(b, "RG");
skip = (rg && bcf_str2id(ma->conf->rghash, (const char*)(rg+1)) >= 0);
if (skip) continue;
}
if (ma->conf->flag & MPLP_ILLUMINA13) {
int i;
uint8_t *qual = bam1_qual(b);
for (i = 0; i < b->core.l_qseq; ++i)
qual[i] = qual[i] > 31? qual[i] - 31 : 0;
}
has_ref = (ma->ref && ma->ref_id == b->core.tid)? 1 : 0;
skip = 0;
if (has_ref && (ma->conf->flag&MPLP_REALN)) bam_prob_realn_core(b, ma->ref, (ma->conf->flag & MPLP_EXT_BAQ)? 3 : 1);
if (has_ref && ma->conf->capQ_thres > 10) {
int q = bam_cap_mapQ(b, ma->ref, ma->conf->capQ_thres);
if (q < 0) skip = 1;
else if (b->core.qual > q) b->core.qual = q;
}
else if (b->core.qual < ma->conf->min_mq) skip = 1;
else if ((ma->conf->flag&MPLP_NO_ORPHAN) && (b->core.flag&1) && !(b->core.flag&2)) skip = 1;
} while (skip);
return ret;
}
int samread(samfile_t *fp, bam1_t *b)
{
if (fp == 0 || !(fp->type & TYPE_READ)) return -1; // not open for reading
if (fp->type & TYPE_BAM) return bam_read1(fp->x.bam, b);
else return sam_read1(fp->x.tamr, fp->header, b);
}
void signalFromBAM(const string bamFileName, const string sigFileName, Parameters P) {
bam1_t *bamA;
bamA=bam_init1();
double nMult=0, nUniq=0;
if (P.outWigFlags.norm==1) {//count reads in the BAM file
BGZF *bamIn=bgzf_open(bamFileName.c_str(),"r");
bam_hdr_t *bamHeader=bam_hdr_read(bamIn);
while ( true ) {//until the end of file
int bamBytes1=bam_read1(bamIn, bamA);
if (bamBytes1<0) break; //end of file
if (bamA->core.tid<0) continue; //unmapped read
// if ( !std::regex_match(chrName.at(bamA->core.tid),std::regex(P.outWigReferencesPrefix))) continue; //reference does not mathc required references
if ( P.outWigReferencesPrefix!="-" && (P.outWigReferencesPrefix.compare(0,P.outWigReferencesPrefix.size(),bamHeader->target_name[bamA->core.tid],P.outWigReferencesPrefix.size())!=0) ) continue; //reference does not match required references
uint8_t* aNHp=bam_aux_get(bamA,"NH");
if (aNHp!=NULL) {
uint32_t aNH=bam_aux2i(aNHp);
if (aNH==1) {//unique mappers
++nUniq;
} else if (aNH>1) {
nMult+=1.0/aNH;
};
};
};
bgzf_close(bamIn);
};
BGZF *bamIn=bgzf_open(bamFileName.c_str(),"r");
bam_hdr_t *bamHeader=bam_hdr_read(bamIn);
int sigN=P.outWigFlags.strand ? 4 : 2;
double *normFactor=new double[sigN];
ofstream **sigOutAll=new ofstream* [sigN];
string* sigOutFileName=new string[sigN];
sigOutFileName[0]=sigFileName+".Unique.str1.out";
sigOutFileName[1]=sigFileName+".UniqueMultiple.str1.out";
if (P.outWigFlags.strand) {
sigOutFileName[2]=sigFileName+".Unique.str2.out";
sigOutFileName[3]=sigFileName+".UniqueMultiple.str2.out";
};
for (int ii=0; ii<sigN; ii++) {
sigOutFileName[ii]+= (P.outWigFlags.format==0 ? ".bg" : ".wig");
sigOutAll[ii]=new ofstream ( sigOutFileName[ii].c_str() );
};
if (P.outWigFlags.norm==0) {//raw counts
normFactor[0]=1;
normFactor[1]=1;
} else if (P.outWigFlags.norm==1) {//normlaized
normFactor[0]=1.0e6 / nUniq;
normFactor[1]=1.0e6 / (nUniq+nMult);
for (int is=0;is<sigN;is++) {//formatting double output
*sigOutAll[is]<<setiosflags(ios::fixed) << setprecision(5);
};
};
if (P.outWigFlags.strand) {
normFactor[2]=normFactor[0];
normFactor[3]=normFactor[1];
};
int iChr=-999;
double *sigAll=NULL;
uint32_t chrLen=0;
while ( true ) {//until the end of file
int bamBytes1=bam_read1(bamIn, bamA);
if (bamA->core.tid!=iChr || bamBytes1<0) {
//output to file
if (iChr!=-999) {//iChr=-999 marks chromosomes that are not output, including unmapped reads
for (int is=0;is<sigN;is++) {
if (P.outWigFlags.format==1) {
*sigOutAll[is] <<"variableStep chrom="<<bamHeader->target_name[iChr] <<"\n";
};
double prevSig=0;
for (uint32_t ig=0;ig<chrLen;ig++) {
double newSig=sigAll[sigN*ig+is];
if (P.outWigFlags.format==0) {//bedGraph
if (newSig!=prevSig) {
if (prevSig!=0) {//finish previous record
*sigOutAll[is] <<ig<<"\t"<<prevSig*normFactor[is] <<"\n"; //1-based end
};
if (newSig!=0) {
*sigOutAll[is] << bamHeader->target_name[iChr] <<"\t"<< ig <<"\t"; //0-based beginning
};
prevSig=newSig;
};
} else if (P.outWigFlags.format==1){//wiggle
if (newSig!=0) {
*sigOutAll[is] <<ig+1<<"\t"<<newSig*normFactor[is] <<"\n";
};
};
};
};
};
if (bamBytes1<0) {//no more reads
break;
};
iChr=bamA->core.tid;
if ( iChr==-1 || (P.outWigReferencesPrefix!="-" && (P.outWigReferencesPrefix.compare(0,P.outWigReferencesPrefix.size(),bamHeader->target_name[bamA->core.tid],P.outWigReferencesPrefix.size())!=0) ) ) {
iChr=-999;
continue; //reference does not match required references
};
chrLen=bamHeader->target_len[iChr]+1;//one extra base at the end which sohuld always be 0
delete [] sigAll;
sigAll= new double[sigN*chrLen];
memset(sigAll, 0, sizeof(*sigAll)*sigN*chrLen);
};
// uint32_t nCigar =(bamA->core.flag<<16)>>16;
// uint32_t mapFlag=bamA->core.flag>>16;
// uint32_t mapQ=(bamA->core.flag<<16)>>24;
#define BAM_CIGAR_OperationShift 4
#define BAM_CIGAR_LengthBits 28
#define BAM_CIGAR_M 0
#define BAM_CIGAR_I 1
#define BAM_CIGAR_D 2
#define BAM_CIGAR_N 3
#define BAM_CIGAR_S 4
#define BAM_CIGAR_H 5
#define BAM_CIGAR_P 6
#define BAM_CIGAR_EQ 7
#define BAM_CIGAR_X 8
//by default, alignments marked as duplicate are not processed
if ( (bamA->core.flag & 0x400) > 0 ) continue;
//NH attribute
uint8_t* aNHp=bam_aux_get(bamA,"NH");
uint32_t aNH;
if (aNHp==NULL) {
aNH=1; //no NH tag: assume NH=1
//continue; //do not process lines without NH field
} else {
aNH=bam_aux2i(bam_aux_get(bamA,"NH")); //write a safer function allowing for lacking NH tag
};
if (aNH==0) continue; //do not process lines without NH=0
uint32_t aG=bamA->core.pos;
uint32_t iStrand=0;
if (P.outWigFlags.strand) {//strand for stranded data from SAM flag
iStrand= ( (bamA->core.flag & 0x10) > 0 ) == ( (bamA->core.flag & 0x80) == 0 );//0/1 for +/-
};
if (P.outWigFlags.type==1) {//5' of the1st read signal only, RAMPAGE/CAGE
if ( (bamA->core.flag & 0x80)>0) continue; //skip if this the second mate
if (iStrand==0) {
if (aNH==1) {//unique mappers
sigAll[aG*sigN+0+2*iStrand]++;
};
sigAll[aG*sigN+1+2*iStrand]+=1.0/aNH;//U+M, normalized by the number of multi-mapping loci
continue; //record only the first position
};
};
uint32_t* cigar=(uint32_t*) (bamA->data+bamA->core.l_qname);
for (uint32_t ic=0; ic<bamA->core.n_cigar; ic++) {
uint32_t cigOp=(cigar[ic]<<BAM_CIGAR_LengthBits)>>BAM_CIGAR_LengthBits;
uint32_t cigL=cigar[ic]>>BAM_CIGAR_OperationShift;
switch (cigOp) {
case(BAM_CIGAR_D):
case(BAM_CIGAR_N):
aG+=cigL;
break;
case(BAM_CIGAR_M):
if (P.outWigFlags.type==0 || (P.outWigFlags.type==2 && (bamA->core.flag & 0x80)>0 )) {//full signal, or second mate onyl signal
for (uint32_t ig=0;ig<cigL;ig++) {
if (aG>=chrLen) {
cerr << "BUG: alignment extends past chromosome in signalFromBAM.cpp\n";
exit(-1);
};
if (aNH==1) {//unique mappers
sigAll[aG*sigN+0+2*iStrand]++;
};
sigAll[aG*sigN+1+2*iStrand]+=1.0/aNH;//U+M, normalized by the number of multi-mapping loci
aG++;
};
} else {
aG+=cigL;
};
};
};
if (P.outWigFlags.type==1) {//full signal
--aG;
if (aNH==1) {//unique mappers
sigAll[aG*sigN+0+2*iStrand]++;
};
sigAll[aG*sigN+1+2*iStrand]+=1.0/aNH;//U+M, normalized by the number of multi-mapping loci
};
};
delete [] sigAll;
for (int is=0; is<sigN; is++) {// flush/close all signal files
sigOutAll[is]->flush();
sigOutAll[is]->close();
};
};
int main(int argc, char *argv[])
{
bamFile in;
sqlite3 * db;
sqlite3_stmt * stmt;
char * sErrMsg = NULL;
char * tail = 0;
int nRetCode;
char sSQL [BUFFER_SIZE] = "\0";
char database[BUFFER_SIZE];
clock_t startClock,startClock2;
if (argc != 2) {
fprintf(stderr, "Usage: bamRindex <in.bam>\n");
return 1;
}
// Open file and exit if error
//in = strcmp(argv[1], "-")? bam_open(argv[1], "rb") : bam_dopen(fileno(stdin), "rb");
//fprintf(stderr,"Options ok\n");
in = bam_open(argv[1], "rb");
if (in == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
//fprintf(stderr,"BAM opened\n");
assert(strcpy(database,argv[1])!=NULL);
assert(strcat(database,".ridx")!=NULL);
remove(database);
// ***********
// Read header
bam_header_t *header;
header = bam_header_read(in);
// sorted by name?
// Should not rely on the value in SO
bam1_t *aln=bam_init1();
unsigned long num_alns=0;
/*********************************************/
/* Open the Database and create the Schema */
// TODO: check the errors
sqlite3_open(database, &db);
sqlite3_exec(db, TABLE, NULL, NULL, &sErrMsg); // create the table
SQLITE_CHECK_ERROR();
startClock = clock();
sqlite3_exec(db, "PRAGMA synchronous = 0;", NULL, NULL, &sErrMsg);
SQLITE_CHECK_ERROR();
sqlite3_exec(db, "PRAGMA journal_mode = OFF;", NULL, NULL, &sErrMsg);
SQLITE_CHECK_ERROR();
// Use up to 8GB of memory
sqlite3_exec(db, "PRAGMA cache_size = -8000000;", NULL, NULL, &sErrMsg);
SQLITE_CHECK_ERROR();
sqlite3_exec(db, "BEGIN TRANSACTION;", NULL, NULL, &sErrMsg);
SQLITE_CHECK_ERROR();
while(bam_read1(in,aln)>=0) { // read alignment
//aln->core.tid < 0 ?
uint8_t *nh = bam_aux_get(aln, "NH");
uint8_t *nm = bam_aux_get(aln, "NM");
uint8_t *xs = bam_aux_get(aln, "XS");
BOOLEAN isPrimary;
BOOLEAN isMapped;
BOOLEAN notMapped;
BOOLEAN isDuplicate;
BOOLEAN isNotPassingQualityControls;
BOOLEAN isPaired;
BOOLEAN isSecondMateRead,isProperPair;
//secondary alignment
notMapped=(aln->core.flag & BAM_FUNMAP) ? TRUE: FALSE;
//notMapped=((aln->core.flag & BAM_FUNMAP) || (aln->core.mtid ==0)) ? TRUE: FALSE;
isMapped=!notMapped;
isPrimary= (aln->core.flag & BAM_FSECONDARY) ? FALSE:TRUE;
isProperPair=(aln->core.flag & BAM_FPROPER_PAIR) ? TRUE:FALSE;
isPaired=(aln->core.flag & BAM_FPAIRED ) ? TRUE:FALSE;
isSecondMateRead=(aln->core.flag & BAM_FREAD2 ) ? TRUE: FALSE;
isNotPassingQualityControls=(aln->core.flag & BAM_FQCFAIL ) ? TRUE:FALSE;
isDuplicate=(aln->core.flag & BAM_FDUP) ? TRUE: FALSE;
BOOLEAN isSpliced=FALSE;
BOOLEAN hasSimpleCigar=TRUE;
int nSpliced=0;
int i;
if (aln->core.n_cigar != 0) {
for (i = 0; i < aln->core.n_cigar; ++i) {
char l="MIDNSHP=X"[bam1_cigar(aln)[i]&BAM_CIGAR_MASK];
//fprintf(stderr,"%c",l);
if ( l == 'N' ) { isSpliced=TRUE; hasSimpleCigar=FALSE;++nSpliced;}
if ( l != 'M' && l!='=' ) { hasSimpleCigar=FALSE;}
}
}
//fprintf(stderr,"read %ld\n",num_alns);
// isDuplicate,isNotPassingQualityControls,
// isSpliced,isPAired,isPrimary,hasSimpleCigar,isSecondMateRead,isProperPair,nh,nm,qual/mapq,xs
sprintf(sSQL,"INSERT into bam_index values (%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,'%c')",
isDuplicate,isNotPassingQualityControls,
nSpliced,isPaired,isPrimary,isMapped,hasSimpleCigar,isSecondMateRead,isProperPair,
(nh==0?0:bam_aux2i(nh)),(nm==0?0:bam_aux2i(nm)),
aln->core.qual,
(xs==0?' ':(bam_aux2A(xs)==0?' ':bam_aux2A(xs))));
sqlite3_exec(db, sSQL, NULL, NULL, &sErrMsg);
SQLITE_CHECK_ERROR();
++num_alns;
PRINT_ALNS_PROCESSED(num_alns);
}
bam_close(in);
sqlite3_exec(db, "END TRANSACTION;", NULL, NULL, &sErrMsg);
SQLITE_CHECK_ERROR();
printf("\nImported %d records in %4.2f seconds\n", num_alns, ( (double) (clock() - startClock))/CLOCKS_PER_SEC);
// Create the indexes
startClock2 = clock();
// generating the indexes does not pay off
//sqlite3_exec(db, INDEXES, NULL, NULL, &sErrMsg);
//printf("Indexed %d records in %4.2f seconds\n", num_alns, ( (double) (clock() - startClock2))/CLOCKS_PER_SEC);
printf("Total time: %4.2f seconds\n", ((double)(clock() - startClock))/CLOCKS_PER_SEC);
sqlite3_close(db);
return 0;
}
// FIX MRNM and unaligned reads
int main(int argc, char *argv[])
{
bamFile in;
long num_unmapped=0;
long num_alns_pe=0;
if (argc != 3) {
fprintf(stderr, "Usage: bam_tophat2_pe_fix <in.bam> <out.bam>\n");
return 1;
}
in = strcmp(argv[1], "-")? bam_open(argv[1], "rb") : bam_dopen(fileno(stdin), "rb");
if (in == 0) {
fprintf(stderr, "ERROR: Fail to open input BAM file %s\n", argv[1]);
return 1;
}
int ref;
unsigned long num_alns=0;
// counts
unsigned long unalign_mapq_fix=0;
unsigned long mtid_fix=0;
unsigned long mpos_fix=0;
bamFile out;
bam_header_t *header;
header = bam_header_read(in);
bam1_t *aln=bam_init1();
out = strcmp(argv[2], "-")? bam_open(argv[2], "w") : bam_dopen(fileno(stdout), "w");
if (out == 0) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[2]);
return 1;
}
bam_header_write(out,header);
while(bam_read1(in,aln)>=0) {
++num_alns;
if (aln->core.tid < 0) {
// unaligned reads
if ( aln->core.qual!=0 ) {
//fprintf(stderr, "ERROR: Unaligned read with quality > 0 in line %lu\n",num_alns);
aln->core.qual=0;
unalign_mapq_fix++;
}
}
//fprintf(stderr,"%s %c %d %d\n",bam1_qname(aln),(aln->core.tid<0?'U':'M'),aln->core.mtid,aln->core.mpos);
if ( aln->core.flag & BAM_FPAIRED ) {
//fprintf(stderr,"paired %d\n",(aln->core.flag & BAM_FMUNMAP));
// paired
if ( aln->core.mtid <0 && !(aln->core.flag & BAM_FMUNMAP) ) {
aln->core.flag |= BAM_FMUNMAP;
aln->core.mpos=-1;
mtid_fix++;
}
if ( aln->core.mpos <0 && !(aln->core.flag & BAM_FMUNMAP) ) {
aln->core.flag |= BAM_FMUNMAP;
aln->core.mtid=-1;
mpos_fix++;
}
}
bam_write1(out,aln);
}
bam_destroy1(aln);
bam_close(in);
bam_close(out);
//
fprintf(stderr,"unaligned MAPQ fixes: %lu\n",unalign_mapq_fix);
fprintf(stderr,"unaligned mtid fixes: %lu\n",mtid_fix);
fprintf(stderr,"unaligned mpos fixes: %lu\n",mpos_fix);
return 0;
}
/**
* PRIVATE. Wander for a region.
*/
static inline int
bfwork_obtain_region(bam_fwork_t *fwork, bam_region_t *region)
{
int err, bytes;
bam1_t *read;
double times;
//Get first read
if(last_read != NULL)
{
read = last_read;
bytes = last_read_bytes;
last_read = NULL;
}
else
{
//Get first read from file
read = bam_init1();
assert(read);
bytes = bam_read1(fwork->input_file->bam_fd, read);
}
//Iterate reads
while(bytes > 0)
{
//Wander this read
omp_set_lock(®ion->lock);
#ifdef D_TIME_DEBUG
times = omp_get_wtime();
#endif
err = fwork->context->wander_f(fwork, region, read);
#ifdef D_TIME_DEBUG
times = omp_get_wtime() - times;
if(fwork->context->time_stats)
time_add_time_slot(D_FWORK_WANDER_FUNC, fwork->context->time_stats, times);
#endif
omp_unset_lock(®ion->lock);
switch(err)
{
case WANDER_READ_FILTERED:
//This read dont pass the filters
case NO_ERROR:
//Add read to region
omp_set_lock(®ion->lock);
region->reads[region->size] = read;
region->size++;
//Region is full?
if(region->size >= region->max_size)
{
omp_unset_lock(®ion->lock);
return WANDER_REGION_CHANGED;
}
omp_unset_lock(®ion->lock);
//Get next read from file
read = bam_init1();
assert(read);
bytes = bam_read1(fwork->input_file->bam_fd, read);
break;
case WANDER_REGION_CHANGED:
//The region have changed
last_read = read;
last_read_bytes = bytes;
return err;
default:
//Unknown error
LOG_ERROR_F("Framework fails with error code: %d\n", err);
return err;
}
}
//Check read error
if(bytes <= 0)
{
//Destroy bam
bam_destroy1(read);
//End of file
if(bytes == -1)
{
return WANDER_READ_EOF;
}
else
{
return WANDER_READ_TRUNCATED;
}
}
return NO_ERROR;
}
int main(int argc, char *argv[])
{
short out2stdout=0;
bamFile in,in2;
bamFile out;
if (argc != 3) {
fprintf(stderr, "Usage: bam_fix_se_flag <in.bam> <out.bam or - for stdout>\n");
return 1;
}
// Open file and exit if error
in = bam_open(argv[1], "rb");
out2stdout = strcmp(argv[2], "-")? 0 : 1;
out = strcmp(argv[2], "-")? bam_open(argv[2], "w") : bam_dopen(fileno(stdout), "w");
if (in == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
if (out == 0) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[2]);
return 1;
}
unsigned long num_alns=0;
int ref;
// ***********
// Copy header
bam_header_t *header;
header = bam_header_read(in);
bam_header_write(out,header);
// sorted by name?
// Should not rely on the value in SO
bam1_t *aln=bam_init1();
bam1_t *prev=bam_init1();
if (!out2stdout) {
fprintf(stderr,"bam_fix_se_flag version %s\n",VERSION);
fprintf(stderr,"Processing %s\n",argv[1]);
}
// reopen
in2 = bam_open(argv[1], "rb");
if (in2 == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
header = bam_header_read(in2);
num_alns=0;
while(bam_read1(in2,aln)>=0) { // read alignment
if (aln->core.tid < 0) continue;//ignore unaligned reads
if (aln->core.flag & BAM_FUNMAP) continue;
if (aln->core.flag & BAM_FPAIRED ) { // PAIRED
} else { //SE
//turn off the other pair related flags
aln->core.flag&=~BAM_FPROPER_PAIR;
aln->core.flag&=~BAM_FMUNMAP;
aln->core.flag&=~BAM_FREAD1;
aln->core.flag&=~BAM_FREAD2;
fprintf(stderr, ".");
}
bam_write1(out,aln);
if(!out2stdout) PRINT_ALNS_PROCESSED(num_alns);
++num_alns;
}
//
bam_destroy1(aln);
bam_close(in2);
bam_close(out);
if(!out2stdout) {
fprintf(stderr,"%s%lu\n",BACKLINE,num_alns);
fprintf(stderr,"Done.\n");
}
return 0;
}
int main(int argc, char *argv[])
{
short out2stdout=0;
hashtable ht=new_hashtable(HASHSIZE);
bamFile in,in2;
bamFile out;
int paired;//1 if not paired or pair read 1, 2 otherwise
index_mem=sizeof(hashtable)*sizeof(hashnode**)*HASHSIZE*2;
if (argc != 3) {
fprintf(stderr, "Usage: bam_fix_NH <in.bam> <out.bam or - for stdout>\n");
return 1;
}
// Open file and exit if error
in = bam_open(argv[1], "rb");
out2stdout = strcmp(argv[2], "-")? 0 : 1;
out = strcmp(argv[2], "-")? bam_open(argv[2], "w") : bam_dopen(fileno(stdout), "w");
if (in == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
if (out == 0) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[2]);
return 1;
}
unsigned long num_alns=0;
int ref;
// ***********
// Copy header
bam_header_t *header;
header = bam_header_read(in);
bam_header_write(out,header);
// sorted by name?
// Should not rely on the value in SO
bam1_t *aln=bam_init1();
bam1_t *prev=bam_init1();
if (!out2stdout) {
fprintf(stderr,"bam_fix_NH version %s\n",VERSION);
fprintf(stderr,"Processing %s\n",argv[1]);
fprintf(stderr,"Hashing...\n");fflush(stderr);
}
while(bam_read1(in,aln)>=0) { // read alignment
if (aln->core.tid < 0) continue;//ignore unaligned reads
if (aln->core.flag & BAM_FUNMAP) continue;
if (aln->core.flag & BAM_FREAD2) paired=2;
else paired=1;
++num_alns;
new_read_aln(ht,fix_read_name(bam1_qname(aln),paired));
if(!out2stdout) PRINT_ALNS_PROCESSED(num_alns);
}
bam_close(in);
if(!out2stdout) {
fprintf(stderr,"%s%lu\n",BACKLINE,num_alns);
fprintf(stderr,"Hashing complete (%lu alignments)\n",num_alns);
fprintf(stderr,"Memory used: %ld MB\n",index_mem/1024/1024);
fprintf(stderr,"Updating entries with NH and printing BAM...\n");
fflush(stderr);
}
// reopen
in2 = bam_open(argv[1], "rb");
if (in2 == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
header = bam_header_read(in2);
num_alns=0;
while(bam_read1(in2,aln)>=0) { // read alignment
paired=1;
if (aln->core.tid < 0) continue;//ignore unaligned reads
if (aln->core.flag & BAM_FUNMAP) continue;
if (aln->core.flag & BAM_FREAD2) paired=2;
++num_alns;
READ_ALN *r=get_read_aln(ht,fix_read_name(bam1_qname(aln),paired));
assert(r!=NULL);
// update the NH field
uint8_t *old_nh = bam_aux_get(aln, "NH");
int32_t nh=r->ctr;
if (old_nh) {
if (nh!=bam_aux2i(old_nh)) {
fprintf(stderr,"warning: value mismatch! replacing>%s %d->%d\n",bam1_qname(aln),bam_aux2i(old_nh),nh);
}
bam_aux_del(aln, old_nh);
bam_aux_append(aln, "NH", 'i', 4, (uint8_t*)&nh);
#ifdef DEBUG
// printf("!>%s %d\n",bam1_qname(aln),r->ctr);
#endif
}
if (!old_nh) { // add NH
bam_aux_append(aln, "NH", 'i', 4, (uint8_t*)&nh);
#ifdef DEBUG
fprintf(stderr,"!>%s %d\n",bam1_qname(aln),bam_aux2i(old_nh));
#endif
}
bam_write1(out,aln);
if(!out2stdout) PRINT_ALNS_PROCESSED(num_alns);
}
//
bam_destroy1(aln);
bam_close(in2);
bam_close(out);
if(!out2stdout) {
fprintf(stderr,"%s%lu\n",BACKLINE,num_alns);
fprintf(stderr,"Done.\n");
}
return 0;
}
int main(int argc, char *argv[])
{
hashtable ht=new_hashtable(HASHSIZE);
bamFile in,in2;
bamFile out;
if (argc != 3) {
fprintf(stderr, "Usage: bam_fix_NH <in.bam> <out.bam>\n");
return 1;
}
// Open file and exit if error
//in = strcmp(argv[1], "-")? bam_open(argv[1], "rb") : bam_dopen(fileno(stdin), "rb");
in = bam_open(argv[1], "rb");
out = strcmp(argv[2], "-")? bam_open(argv[2], "w") : bam_dopen(fileno(stdout), "w");
if (in == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
if (out == 0) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[2]);
return 1;
}
unsigned long num_alns=0;
int ref;
// ***********
// Copy header
bam_header_t *header;
header = bam_header_read(in);
bam_header_write(out,header);
// sorted by name?
// Should not rely on the value in SO
bam1_t *aln=bam_init1();
bam1_t *prev=bam_init1();
printf("Hashing...\n");flush(stdout);
while(bam_read1(in,aln)>=0) { // read alignment
if (aln->core.tid < 0) continue;//ignore unaligned reads
++num_alns;
new_read_aln(ht,bam1_qname(aln));
}
bam_close(in);
printf("Hashing complete (%lu alignments)\n",num_alns);
printf("Memory used in the hash: %ld MB\n",index_mem/1024/1024);
flush(stdout);
// reopen
in2 = bam_open(argv[1], "rb");
if (in2 == 0 ) {
fprintf(stderr, "ERROR: Fail to open BAM file %s\n", argv[1]);
return 1;
}
header = bam_header_read(in2);
while(bam_read1(in2,aln)>=0) { // read alignment
if (aln->core.tid < 0) continue;//ignore unaligned reads
++num_alns;
READ_ALN *r=get_read_aln(ht,bam1_qname(aln));
//assert(r!=NULL);
// update the NH field
uint8_t *old_nh = bam_aux_get(aln, "NH");
uint8_t nh=r->ctr;
if (old_nh) {
if (nh!=bam_aux2i(old_nh)) {
fprintf(stderr,"warning: value mismatch! replacing>%s %d->%d\n",bam1_qname(aln),bam_aux2i(old_nh),nh);
}
bam_aux_del(aln, old_nh);
bam_aux_append(aln, "NH", 'i', 4, (uint8_t*)&nh);
}
if (!old_nh) { // add NH
bam_aux_append(aln, "NH", 'i', 4, (uint8_t*)&nh);
#ifdef DEBUG
printf("!>%s %d\n",bam1_qname(aln),bam_aux2i(old_nh));
#endif
}
// in->header
// Also fix the XS:A tag
// BAM_FREAD1
// BAM_FREAD2
// BAM_FREVERSE the read is mapped to the reverse strand
//bam1_cigar(b)
//BAM_CREF_SKIP 3 CIGAR skip on the reference (e.g. spliced alignment)
//BAM_FREVERSE 16 the read is mapped to the reverse strand
if (aln->core.flag & BAM_FSECONDARY) continue; // skip secondary alignments
if (aln->core.flag & ! BAM_FPAIRED) continue; // not paired
if (aln->core.flag & ! BAM_FPROPER_PAIR) continue; // not a proper pair
if (aln->core.flag & ! BAM_FMUNMAP) continue; // the mate is mapped
if (aln->core.flag & BAM_FSECONDARY) continue; // secundary read
if (aln->core.flag & BAM_FREAD2) continue; // only count each pair once
// core.strand == 0 (f/+) 1 r/-
// flag
// bam1_qname(b)
bam_write1(out,aln);
}
//
bam_destroy1(aln);
bam_close(in2);
bam_close(out);
return 0;
/*
uint8_t *old_nm = bam_aux_get(b, "NM");
90 if (c->flag & BAM_FUNMAP) return;
91 if (old_nm) old_nm_i = bam_aux2i(old_nm);
92 if (!old_nm) bam_aux_append(b, "NM", 'i', 4, (uint8_t*)&nm);
93 else if (nm != old_nm_i) {
94 fprintf(stderr, "[bam_fillmd1] different NM for read '%s': %d -> %d\n", bam1_qname(b), old_nm_i, nm);
95 bam_aux_del(b, old_nm);
96 bam_aux_append(b, "NM", 'i', 4, (uint8_t*)&nm);
97 }
*/
}
/* Read one pair from a bam file. Returns 1 if we got a singleton, 2 if
* we got a pair, 0 if we reached EOF, -1 if something outside our
* control went wrong, -2 if we got something unexpected (missing mate,
* fragment with unexpected PE flags).
*/
static int read_bam_pair_core(bwa_seqio_t *bs, bam_pair_t *pair, int allow_broken)
{
static int num_wrong_pair = 128 ;
memset(pair, 0, sizeof(bam_pair_t)) ;
if (bam_read1(bs->fp, &pair->bam_rec[0]) < 0) return 0 ;
while(1) {
if (pair->bam_rec[0].core.flag & BAM_FPAIRED) { // paired read, get another
if (bam_read1(bs->fp, &pair->bam_rec[1]) >= 0) {
uint32_t flag1 = pair->bam_rec[0].core.flag & (BAM_FPAIRED|BAM_FREAD1|BAM_FREAD2);
uint32_t flag2 = pair->bam_rec[1].core.flag & (BAM_FPAIRED|BAM_FREAD1|BAM_FREAD2);
if (!strcmp(bam1_qname(&pair->bam_rec[0]), bam1_qname(&pair->bam_rec[1]))) { // actual mates
if( flag1 == (BAM_FPAIRED|BAM_FREAD1) && flag2 == (BAM_FPAIRED|BAM_FREAD2) ) { // correct order
pair->kind = proper_pair ;
return 2 ;
} else if (flag2 == (BAM_FPAIRED|BAM_FREAD1) && flag1 == (BAM_FPAIRED|BAM_FREAD2) ) { // reverse order
memswap(&pair->bam_rec[0], &pair->bam_rec[1], sizeof(bam1_t));
pair->kind = proper_pair ;
return 2 ;
} else {
fprintf( stderr, "[read_bam_pair] got a pair, but the flags are wrong (%s).\n", bam1_qname(&pair->bam_rec[0]) ) ;
if( allow_broken ) {
pair->bam_rec[0].core.flag &= ~BAM_FREAD2;
pair->bam_rec[0].core.flag |= BAM_FPAIRED|BAM_FREAD1;
pair->bam_rec[1].core.flag &= ~BAM_FREAD1;
pair->bam_rec[1].core.flag |= BAM_FPAIRED|BAM_FREAD2;
pair->kind = proper_pair ;
return 2 ;
}
else return -2 ;
}
} else {
// This is arguably wrong, we discard a lone mate. But what else could we do? Buffering it
// somewhere to way is too hard for the time being, returning it as a single means we need to buffer the
// next one. Not very appealing. So only two options remain: discard it or bail out.
if( num_wrong_pair ) {
fprintf( stderr, "[read_bam_pair] got two reads, but the names don't match (%s,%s).\n",
bam1_qname(&pair->bam_rec[0]), bam1_qname(&pair->bam_rec[1]) ) ;
--num_wrong_pair ;
if( !num_wrong_pair )
fprintf( stderr, "[read_bam_pair] too many mismatched names, not reporting anymore.\n" ) ;
}
try_get_sai( bs->sai, flag1 & BAM_FREAD1 ? 1 : 2, &pair->bwa_seq[0].n_aln, &pair->bwa_seq[0].aln ) ;
free(pair->bam_rec[0].data);
if(pair->bwa_seq[0].n_aln) free(pair->bwa_seq[0].aln);
if( !allow_broken ) {
free(pair->bam_rec[1].data);
if(pair->bwa_seq[0].n_aln) free(pair->bwa_seq[0].aln);
return -2 ;
}
memmove(&pair->bam_rec[0], &pair->bam_rec[1], sizeof(bam1_t));
memset(&pair->bam_rec[1], 0, sizeof(bam1_t));
}
} else {
fprintf( stderr, "[read_bam_pair] got a paired read and hit EOF.\n" ) ;
free(pair->bam_rec[0].data);
if(pair->bwa_seq[0].n_aln) free(pair->bwa_seq[0].aln);
return allow_broken ? 0 : -2 ;
}
} else { // singleton read
pair->kind = singleton ;
return 1 ;
}
}
}
/*!
@abstract Sort an unsorted BAM file based on the chromosome order
and the leftmost position of an alignment
@param is_by_qname whether to sort by query name
@param fn name of the file to be sorted
@param prefix prefix of the output and the temporary files; upon
sucessess, prefix.bam will be written.
@param max_mem approxiate maximum memory (very inaccurate)
@discussion It may create multiple temporary subalignment files
and then merge them by calling bam_merge_core(). This function is
NOT thread safe.
*/
void bam_sort_core_ext(int is_by_qname, const char *fn, const char *prefix, size_t max_mem, int is_stdout)
{
int n, ret, k, i;
size_t mem;
bam_header_t *header;
bamFile fp;
bam1_t *b, **buf;
g_is_by_qname = is_by_qname;
n = k = 0; mem = 0;
fp = strcmp(fn, "-")? bam_open(fn, "r") : bam_dopen(fileno(stdin), "r");
if (fp == 0) {
fprintf(stderr, "[bam_sort_core] fail to open file %s\n", fn);
return;
}
header = bam_header_read(fp);
if (is_by_qname) change_SO(header, "queryname");
else change_SO(header, "coordinate");
buf = (bam1_t**)calloc(max_mem / BAM_CORE_SIZE, sizeof(bam1_t*));
// write sub files
for (;;) {
if (buf[k] == 0) buf[k] = (bam1_t*)calloc(1, sizeof(bam1_t));
b = buf[k];
if ((ret = bam_read1(fp, b)) < 0) break;
mem += ret;
++k;
if (mem >= max_mem) {
sort_blocks(n++, k, buf, prefix, header, 0);
mem = 0; k = 0;
}
}
if (ret != -1)
fprintf(stderr, "[bam_sort_core] truncated file. Continue anyway.\n");
if (n == 0) sort_blocks(-1, k, buf, prefix, header, is_stdout);
else { // then merge
char **fns, *fnout;
fprintf(stderr, "[bam_sort_core] merging from %d files...\n", n+1);
sort_blocks(n++, k, buf, prefix, header, 0);
fnout = (char*)calloc(strlen(prefix) + 20, 1);
if (is_stdout) sprintf(fnout, "-");
else sprintf(fnout, "%s.bam", prefix);
fns = (char**)calloc(n, sizeof(char*));
for (i = 0; i < n; ++i) {
fns[i] = (char*)calloc(strlen(prefix) + 20, 1);
sprintf(fns[i], "%s.%.4d.bam", prefix, i);
}
bam_merge_core(is_by_qname, fnout, 0, n, fns, 0, 0);
free(fnout);
for (i = 0; i < n; ++i) {
unlink(fns[i]);
free(fns[i]);
}
free(fns);
}
for (k = 0; (size_t)k < max_mem / BAM_CORE_SIZE; ++k) {
if (buf[k]) {
free(buf[k]->data);
free(buf[k]);
}
}
free(buf);
bam_header_destroy(header);
bam_close(fp);
}
int main_bam2fq(int argc, char *argv[])
{
BGZF *fp, *fpse = 0;
bam1_t *b;
uint8_t *buf;
int max_buf, c, has12 = 0;
kstring_t str;
int64_t n_singletons = 0, n_reads = 0;
char last[512], *fnse = 0;
while ((c = getopt(argc, argv, "as:")) > 0)
if (c == 'a') has12 = 1;
else if (c == 's') fnse = optarg;
if (argc == optind) {
fprintf(stderr, "\nUsage: bam2fq [-a] [-s outSE] <in.bam>\n\n");
fprintf(stderr, "Options: -a append /1 and /2 to the read name\n");
fprintf(stderr, " -s FILE write singleton reads to FILE [assume single-end]\n");
fprintf(stderr, "\n");
return 1;
}
fp = strcmp(argv[optind], "-")? bgzf_open(argv[optind], "r") : bgzf_dopen(fileno(stdin), "r");
assert(fp);
bam_hdr_destroy(bam_hdr_read(fp));
buf = 0;
max_buf = 0;
str.l = str.m = 0;
str.s = 0;
last[0] = 0;
if (fnse) fpse = bgzf_open(fnse, "w1");
b = bam_init1();
while (bam_read1(fp, b) >= 0) {
int i, qlen = b->core.l_qseq, is_print = 0;
uint8_t *qual, *seq;
if (b->flag&BAM_FSECONDARY) continue; // skip secondary alignments
++n_reads;
if (fpse) {
if (str.l && strcmp(last, bam_get_qname(b))) {
bgzf_write(fpse, str.s, str.l);
str.l = 0;
++n_singletons;
}
if (str.l) is_print = 1;
strcpy(last, bam_get_qname(b));
} else is_print = 1;
qual = bam_get_qual(b);
kputc(qual[0] == 0xff? '>' : '@', &str);
kputsn(bam_get_qname(b), b->core.l_qname - 1, &str);
if (has12) {
kputc('/', &str);
kputw(b->core.flag>>6&3, &str);
}
kputc('\n', &str);
if (max_buf < qlen + 1) {
max_buf = qlen + 1;
kroundup32(max_buf);
buf = (uint8_t*)realloc(buf, max_buf);
}
buf[qlen] = 0;
seq = bam_get_seq(b);
for (i = 0; i < qlen; ++i) buf[i] = bam_seqi(seq, i); // copy the sequence
if (bam_is_rev(b)) { // reverse complement
for (i = 0; i < qlen>>1; ++i) {
int8_t t = seq_comp_table[buf[qlen - 1 - i]];
buf[qlen - 1 - i] = seq_comp_table[buf[i]];
buf[i] = t;
}
if (qlen&1) buf[i] = seq_comp_table[buf[i]];
}
for (i = 0; i < qlen; ++i) buf[i] = seq_nt16_str[buf[i]];
kputsn((char*)buf, qlen, &str);
kputc('\n', &str);
if (qual[0] != 0xff) {
kputsn("+\n", 2, &str);
for (i = 0; i < qlen; ++i) buf[i] = 33 + qual[i];
if (bam_is_rev(b)) { // reverse
for (i = 0; i < qlen>>1; ++i) {
uint8_t t = buf[qlen - 1 - i];
buf[qlen - 1 - i] = buf[i];
buf[i] = t;
}
}
}
kputsn((char*)buf, qlen, &str);
kputc('\n', &str);
if (is_print) {
fwrite(str.s, 1, str.l, stdout);
str.l = 0;
}
}
if (fpse) {
if (str.l) {
bgzf_write(fpse, str.s, str.l);
++n_singletons;
}
fprintf(stderr, "[M::%s] discarded %lld singletons\n", __func__, (long long)n_singletons);
bgzf_close(fpse);
}
fprintf(stderr, "[M::%s] processed %lld reads\n", __func__, (long long)n_reads);
free(buf);
free(str.s);
bam_destroy1(b);
bgzf_close(fp);
return 0;
}
static bwa_seq_t *bwa_read_bam(bwa_seqio_t *bs, int n_needed, int *n, int is_comp, int trim_qual)
{
bwa_seq_t *seqs, *p;
int n_seqs, l, i;
long n_trimmed = 0, n_tot = 0;
bam1_t *b;
int res;
b = bam_init1();
n_seqs = 0;
seqs = (bwa_seq_t*)calloc(n_needed, sizeof(bwa_seq_t));
#ifdef USE_HTSLIB
while ((res = sam_read1(bs->fp, bs->h, b)) >= 0) {
#else
while ((res = bam_read1(bs->fp, b)) >= 0) {
#endif
uint8_t *s, *q;
int go = 0;
if ((bs->which & 1) && (b->core.flag & BAM_FREAD1)) go = 1;
if ((bs->which & 2) && (b->core.flag & BAM_FREAD2)) go = 1;
if ((bs->which & 4) && !(b->core.flag& BAM_FREAD1) && !(b->core.flag& BAM_FREAD2))go = 1;
if (go == 0) continue;
l = b->core.l_qseq;
p = &seqs[n_seqs++];
p->tid = -1; // no assigned to a thread
p->qual = 0;
p->full_len = p->clip_len = p->len = l;
n_tot += p->full_len;
#ifdef USE_HTSLIB
s = bam_get_seq(b); q = bam_get_qual(b);
#else
s = bam1_seq(b); q = bam1_qual(b);
#endif
p->seq = (ubyte_t*)calloc(p->len + 1, 1);
p->qual = (ubyte_t*)calloc(p->len + 1, 1);
for (i = 0; i != p->full_len; ++i) {
#ifdef USE_HTSLIB
p->seq[i] = bam_nt16_nt4_table[(int)bam_seqi(s, i)];
#else
p->seq[i] = bam_nt16_nt4_table[(int)bam1_seqi(s, i)];
#endif
p->qual[i] = q[i] + 33 < 126? q[i] + 33 : 126;
}
#ifdef USE_HTSLIB
if (bam_is_rev(b)) { // then reverse
#else
if (bam1_strand(b)) { // then reverse
#endif
seq_reverse(p->len, p->seq, 1);
seq_reverse(p->len, p->qual, 0);
}
if (trim_qual >= 1) n_trimmed += bwa_trim_read(trim_qual, p);
p->rseq = (ubyte_t*)calloc(p->full_len, 1);
memcpy(p->rseq, p->seq, p->len);
seq_reverse(p->len, p->seq, 0); // *IMPORTANT*: will be reversed back in bwa_refine_gapped()
seq_reverse(p->len, p->rseq, is_comp);
#ifdef USE_HTSLIB
p->name = strdup((const char*)bam_get_qname(b));
#else
p->name = strdup((const char*)bam1_qname(b));
#endif
if (n_seqs == n_needed) break;
}
if (res < 0 && res != -1) err_fatal_simple("Error reading bam file");
*n = n_seqs;
if (n_seqs && trim_qual >= 1)
fprintf(stderr, "[bwa_read_seq] %.1f%% bases are trimmed.\n", 100.0f * n_trimmed/n_tot);
if (n_seqs == 0) {
free(seqs);
bam_destroy1(b);
return 0;
}
bam_destroy1(b);
return seqs;
}
#define BARCODE_LOW_QUAL 13
bwa_seq_t *bwa_read_seq(bwa_seqio_t *bs, int n_needed, int *n, int mode, int trim_qual)
{
bwa_seq_t *seqs, *p;
kseq_t *seq = bs->ks;
int n_seqs, l, i, is_comp = mode&BWA_MODE_COMPREAD, is_64 = mode&BWA_MODE_IL13, l_bc = mode>>24;
long n_trimmed = 0, n_tot = 0;
if (l_bc > BWA_MAX_BCLEN) {
fprintf(stderr, "[%s] the maximum barcode length is %d.\n", __func__, BWA_MAX_BCLEN);
return 0;
}
if (bs->is_bam) return bwa_read_bam(bs, n_needed, n, is_comp, trim_qual); // l_bc has no effect for BAM input
n_seqs = 0;
seqs = (bwa_seq_t*)calloc(n_needed, sizeof(bwa_seq_t));
while ((l = kseq_read(seq)) >= 0) {
if ((mode & BWA_MODE_CFY) && (seq->comment.l != 0)) {
// skip reads that are marked to be filtered by Casava
char *s = index(seq->comment.s, ':');
if (s && *(++s) == 'Y') {
continue;
}
}
if (is_64 && seq->qual.l)
for (i = 0; i < seq->qual.l; ++i) seq->qual.s[i] -= 31;
if (seq->seq.l <= l_bc) continue; // sequence length equals or smaller than the barcode length
p = &seqs[n_seqs++];
if (l_bc) { // then trim barcode
for (i = 0; i < l_bc; ++i)
p->bc[i] = (seq->qual.l && seq->qual.s[i]-33 < BARCODE_LOW_QUAL)? tolower(seq->seq.s[i]) : toupper(seq->seq.s[i]);
p->bc[i] = 0;
for (; i < seq->seq.l; ++i)
seq->seq.s[i - l_bc] = seq->seq.s[i];
seq->seq.l -= l_bc; seq->seq.s[seq->seq.l] = 0;
if (seq->qual.l) {
for (i = l_bc; i < seq->qual.l; ++i)
seq->qual.s[i - l_bc] = seq->qual.s[i];
seq->qual.l -= l_bc; seq->qual.s[seq->qual.l] = 0;
}
l = seq->seq.l;
} else p->bc[0] = 0;
p->tid = -1; // no assigned to a thread
p->qual = 0;
p->full_len = p->clip_len = p->len = l;
n_tot += p->full_len;
p->seq = (ubyte_t*)calloc(p->full_len, 1);
for (i = 0; i != p->full_len; ++i)
p->seq[i] = nst_nt4_table[(int)seq->seq.s[i]];
if (seq->qual.l) { // copy quality
p->qual = (ubyte_t*)strdup((char*)seq->qual.s);
if (trim_qual >= 1) n_trimmed += bwa_trim_read(trim_qual, p);
}
p->rseq = (ubyte_t*)calloc(p->full_len, 1);
memcpy(p->rseq, p->seq, p->len);
seq_reverse(p->len, p->seq, 0); // *IMPORTANT*: will be reversed back in bwa_refine_gapped()
seq_reverse(p->len, p->rseq, is_comp);
p->name = strdup((const char*)seq->name.s);
{ // trim /[12]$
int t = strlen(p->name);
if (t > 2 && p->name[t-2] == '/' && (p->name[t-1] == '1' || p->name[t-1] == '2')) p->name[t-2] = '\0';
}
if (n_seqs == n_needed) break;
}
*n = n_seqs;
if (n_seqs && trim_qual >= 1)
fprintf(stderr, "[bwa_read_seq] %.1f%% bases are trimmed.\n", 100.0f * n_trimmed/n_tot);
if (n_seqs == 0) {
free(seqs);
return 0;
}
return seqs;
}
void bwa_free_read_seq(int n_seqs, bwa_seq_t *seqs)
{
int i, j;
for (i = 0; i != n_seqs; ++i) {
bwa_seq_t *p = seqs + i;
for (j = 0; j < p->n_multi; ++j)
if (p->multi[j].cigar) free(p->multi[j].cigar);
free(p->name);
free(p->seq); free(p->rseq); free(p->qual); free(p->aln); free(p->md); free(p->multi);
free(p->cigar);
}
free(seqs);
}
void filterReads(char * inBamFile,
char * outBamFile,
int minMapQual,
int minLen,
int maxMisMatches,
float minPcId,
float minPcAln,
int ignoreSuppAlignments,
int ignoreSecondaryAlignments) {
//
int result = -1;
int outResult = -1;
int supp_check = 0x0;
if (ignoreSuppAlignments) {
supp_check |= BAM_FSUPPLEMENTARY;
}
if (ignoreSecondaryAlignments) {
supp_check |= BAM_FSECONDARY;
}
// helper variables
BGZF* in = 0;
BGZF* out = 0;
bam1_t *b = bam_init1();
bam_hdr_t *h;
// open bam
if ((in = bgzf_open(inBamFile, "r")) == 0) {
fprintf(stderr,
"ERROR: Failed to open \"%s\" for reading.\n",
inBamFile);
}
else if ((h = bam_hdr_read(in)) == 0) { // read header
fprintf(stderr,
"ERROR: Failed to read BAM header of file \"%s\".\n",
inBamFile);
}
else if ((out = bgzf_open(outBamFile, "w")) == 0) {
fprintf(stderr,
"ERROR: Failed to open \"%s\" for writing.\n",
outBamFile);
}
else {
// write and destroy header
bam_hdr_write(out, h);
bam_hdr_destroy(h);
int line = 0;
int matches, mismatches, qLen;
float pcAln, pcId;
int showStats = 0;
// fetch alignments
while ((result = bam_read1(in, b)) >= 0) {
line += 1;
// only primary mappings
if ((b->core.flag & supp_check) != 0) {
if (showStats)
fprintf(stdout, "Rejected %d, non-primary\n", line);
continue;
}
// only high quality
if (b->core.qual < minMapQual) {
if (showStats)
fprintf(stdout, "Rejected %d, quality: %d\n", line, b->core.qual);
continue;
}
// not too many absolute mismatches
mismatches = bam_aux2i(bam_aux_get(b, "NM"));
if (mismatches > maxMisMatches) {
if (showStats)
fprintf(stdout, "Rejected %d, mismatches: %d\n", line, mismatches);
continue;
}
// not too short
qLen = bam_cigar2qlen((&b->core)->n_cigar, bam_get_cigar(b));
if (qLen < minLen) {
if (showStats)
fprintf(stdout, "Rejected %d, length: %d\n", line, qLen);
continue;
}
// only high percent identity
matches = bam_cigar2matches((&b->core)->n_cigar, bam_get_cigar(b));
pcId = (matches - mismatches) / (float)matches; // percentage as float between 0 to 1
if (pcId < minPcId) {
if (showStats)
fprintf(stdout, "Rejected %d, identity pc: %.4f\n", line, pcId);
continue;
}
// only high percent alignment
pcAln = matches / (float)qLen; // percentage as float between 0 to 1
if (pcAln < minPcAln) {
if (showStats)
fprintf(stdout, "Rejected %d, alignment pc: %.4f\n", line, pcAln);
continue;
}
if ((outResult = bam_write1(out, b)) < -1) {
fprintf(stderr,
"ERROR: Attempt to write read no. %d to file \"%s\" failed with code %d.\n",
line, outBamFile, outResult);
}
}
if (result < -1) {
fprintf(stderr,
"ERROR: retrieval of read no. %d from file \"%s\" failed with code %d.\n",
line, inBamFile, result);
}
}
if (in) bgzf_close(in);
if (out) bgzf_close(out);
bam_destroy1(b);
}
/*!
@abstract Sort an unsorted BAM file based on the chromosome order
and the leftmost position of an alignment
@param is_by_qname whether to sort by query name
@param fn name of the file to be sorted
@param prefix prefix of the output and the temporary files; upon
sucessess, prefix.bam will be written.
@param max_mem approxiate maximum memory (very inaccurate)
@discussion It may create multiple temporary subalignment files
and then merge them by calling bam_merge_core(). This function is
NOT thread safe.
*/
void bam_sort_core_ext(int is_by_qname, const char *fn, const char *prefix, size_t _max_mem, int is_stdout, int n_threads, int level, int sort_type)
{
int ret, i, n_files = 0;
size_t mem, max_k, k, max_mem;
bam_header_t *header;
bamFile fp;
bam1_t *b, **buf;
char *fnout = 0;
if (n_threads < 2) n_threads = 1;
g_is_by_qname = is_by_qname;
max_k = k = 0; mem = 0;
max_mem = _max_mem * n_threads;
buf = 0;
fp = strcmp(fn, "-")? bam_open(fn, "r") : bam_dopen(fileno(stdin), "r");
if (fp == 0) {
fprintf(stderr, "[bam_sort_core] fail to open file %s\n", fn);
return;
}
header = bam_header_read(fp);
if (is_by_qname) change_SO(header, "queryname");
else change_SO(header, "coordinate");
// write sub files
for (;;) {
if (k == max_k) {
size_t old_max = max_k;
max_k = max_k? max_k<<1 : 0x10000;
buf = realloc(buf, max_k * sizeof(void*));
memset(buf + old_max, 0, sizeof(void*) * (max_k - old_max));
}
if (buf[k] == 0) buf[k] = (bam1_t*)calloc(1, sizeof(bam1_t));
b = buf[k];
if ((ret = bam_read1(fp, b)) < 0) break;
if (b->data_len < b->m_data>>2) { // shrink
b->m_data = b->data_len;
kroundup32(b->m_data);
b->data = realloc(b->data, b->m_data);
}
mem += sizeof(bam1_t) + b->m_data + sizeof(void*) + sizeof(void*); // two sizeof(void*) for the data allocated to pointer arrays
++k;
if (mem >= max_mem) {
n_files = sort_blocks(n_files, k, buf, prefix, header, n_threads, sort_type);
mem = k = 0;
}
}
if (ret != -1)
fprintf(stderr, "[bam_sort_core] truncated file. Continue anyway.\n");
// output file name
fnout = calloc(strlen(prefix) + 20, 1);
if (is_stdout) sprintf(fnout, "-");
else sprintf(fnout, "%s.bam", prefix);
// write the final output
if (n_files == 0) { // a single block
char mode[8];
strcpy(mode, "w");
if (level >= 0) sprintf(mode + 1, "%d", level < 9? level : 9);
sort_aux_core(k, buf, sort_type);
#ifndef _PBGZF_USE
write_buffer(fnout, mode, k, buf, header, n_threads);
#else
write_buffer(fnout, mode, k, buf, header);
#endif
} else { // then merge
char **fns;
n_files = sort_blocks(n_files, k, buf, prefix, header, n_threads, sort_type);
fprintf(stderr, "[bam_sort_core] merging from %d files...\n", n_files);
fns = (char**)calloc(n_files, sizeof(char*));
for (i = 0; i < n_files; ++i) {
fns[i] = (char*)calloc(strlen(prefix) + 20, 1);
sprintf(fns[i], "%s.%.4d.bam", prefix, i);
}
#ifndef _PBGZF_USE
bam_merge_core2(is_by_qname, fnout, 0, n_files, fns, 0, 0, n_threads, level);
#else
bam_merge_core2(is_by_qname, fnout, 0, n_files, fns, 0, 0, level);
#endif
for (i = 0; i < n_files; ++i) {
unlink(fns[i]);
free(fns[i]);
}
free(fns);
}
free(fnout);
// free
for (k = 0; k < max_k; ++k) {
if (!buf[k]) continue;
free(buf[k]->data);
free(buf[k]);
}
free(buf);
bam_header_destroy(header);
bam_close(fp);
}
int main(int argc,char* argv[]) {
time_t timestamp, current;
int i,j,k;
int a,n;
char *pc;
FILE *input_file;
FILE *output_file;
FILE* log_file=stderr;
bamFile bam_input;
bam_header_t *header;
bam1_t* b;
bam1_core_t *c;
char cps_file_name[MAXFILEBUFFLENGTH]="";
char bam_file_name[MAXFILEBUFFLENGTH]="";
char out_file_name[MAXFILEBUFFLENGTH]="";
char log_file_name[MAXFILEBUFFLENGTH]="";
char buff[MAXFILEBUFFLENGTH];
char chr[MAXFILEBUFFLENGTH];
int beg, beg_prev, end, pos, offset;
int ref_id, ref_id_prev, label;
int s, side;
int read_type, mapped_strand;
char ch;
int limit_counts = 0;
int* contig_count[2];
int* contig_index[2];
splice_site** contig_sites[2];
long int n_reads[N_READ_TYPES][2];
long int n_total_reads = 0;
long int n_skipped_reads = 0;
int max_intron_length=0;
int min_intron_length=0;
int ignore_gene_labels = 0;
int stranded = 1;
int rev_compl[2] = {1,0};
int other_end, the_end, donor_id, acceptor_id;
int *cigar;
int flagged = 0;
int margin = 4;
/** reading input from the command line **/
timestamp = time(NULL);
if(argc==1) {
fprintf(stderr, "BAM2SSJ is the utility for fast counting reads covering splice junctions\nCommand line use:\n");
fprintf(stderr, "%s -cps <cps_file> -bam <bam_file> [-out <out_file>] [-log <log_file>] [-maxlen <max_intron_length>] [-minlen <min_intron_length>] [-margin <length>] ",argv[0]);
fprintf(stderr, "[-v suppress verbose output] [-read1 0/1] [-read2 0/1] [-g ignore gene labels] [-u unstranded] [-f count reads flagged 0x800 only]\ntype %s -h for more info\n",argv[0]);
exit(1);
}
for(i=1;i<argc;i++) {
pc = argv[i];
if(*pc == '-') {
if(strcmp(pc+1,"cps") == 0) sscanf(argv[++i], "%s", &cps_file_name[0]);
if(strcmp(pc+1,"bam") == 0) sscanf(argv[++i], "%s", &bam_file_name[0]);
if(strcmp(pc+1,"out") == 0) sscanf(argv[++i], "%s", &out_file_name[0]);
if(strcmp(pc+1,"log") == 0) sscanf(argv[++i], "%s", &log_file_name[0]);
if(strcmp(pc+1,"read1") == 0) sscanf(argv[++i], "%i", &rev_compl[0]);
if(strcmp(pc+1,"read2") == 0) sscanf(argv[++i], "%i", &rev_compl[1]);
if(strcmp(pc+1,"lim") == 0) sscanf(argv[++i], "%i", &limit_counts);
if(strcmp(pc+1,"minlen") == 0) sscanf(argv[++i], "%i", &min_intron_length);
if(strcmp(pc+1,"maxlen") == 0) sscanf(argv[++i], "%i", &max_intron_length);
if(strcmp(pc+1,"margin") == 0) sscanf(argv[++i], "%i", &margin);
if(strcmp(pc+1,"v") == 0) verbose = 0;
if(strcmp(pc+1,"g") == 0) ignore_gene_labels = 1;
if(strcmp(pc+1,"u") == 0) stranded = 0;
if(strcmp(pc+1,"f") == 0) flagged = 1;
if(strcmp(pc+1,"h") ==0 ) {
fprintf(stderr, "Input: (1) sorted BAM file\n");
fprintf(stderr, "\t(2) CPS (chromosome-position-strand) tab-delimited file sorted by position (chr1 100 + etc)\n\n");
fprintf(stderr, "\tIn order to get CPS file from gtf, use the utility gtf2cps.sh\n");
fprintf(stderr, "\tImportant: CPS must be sorted by position ONLY!\n\n");
fprintf(stderr, "\tIf the 4th column contains (a numeric) gene label then only splice junctions within the same gene will be considered (unless the '-g' option is active)\n");
fprintf(stderr, "\tThe utility to generate CPS with gene labels is gtf2cps_with_gene_id.sh (or update the script accordingly if you are using genome other than human)\n\n");
fprintf(stderr, "Options:\n");
fprintf(stderr, "\t-maxlen <upper limit on intron length>; 0 = no limit (default=%i)\n",max_intron_length);
fprintf(stderr, "\t-minlen <lower limit on intron length>; 0 = no limit (default=%i)\n",min_intron_length);
fprintf(stderr, "\t-margin <length> minimum number of flanking nucleotides in the read in order to support SJ or cover EB, (default=%i)\n",margin);
fprintf(stderr, "\t-read1 0/1, reverse complement read1 no/yes (default=%i)\n",rev_compl[0]);
fprintf(stderr, "\t-read2 0/1, reverse complement read2 no/yes (default=%i)\n",rev_compl[1]);
fprintf(stderr, "\t-g ignore gene labels (column 4 of cps), default=%s\n", ignore_gene_labels ? "ON" : "OFF");
fprintf(stderr, "\t-u ignore strand (all reads map to the correct strand), default=%s\n", stranded ? "OFF" : "ON");
fprintf(stderr, "\t-f count only reads that are flagged 0x800 (uniquely mapped reads), default=%s\n", flagged ? "ON" : "OFF");
fprintf(stderr, "Output: tab-delimited (default=stdout)\n");
fprintf(stderr, "\tColumn 1 is splice_junction_id\n");
fprintf(stderr, "\tColumns 2-6 are counts of 53, 5X, X3, 50, and 03 reads for the correct (annotated) strand\n");
fprintf(stderr, "\tColumns 7-11 are similar counts for the incorrect (opposite to annotated) strand\n");
fprintf(stderr, "Descriptive read statistics are reported to stderr\n");
exit(1);
}
}
}
if(log_file_name[0]==0) {
log_file = stderr;
}
else {
log_file = fopen(log_file_name,"w");
if(log_file == NULL) log_file = stderr;
}
if(bam_file_name[0]==0) {
fprintf(log_file,"Bam not specified, exiting\n");
exit(1);
}
if(cps_file_name[0]==0) {
fprintf(log_file,"Input not specified, exiting\n");
exit(1);
}
if(out_file_name[0]==0) {
fprintf(log_file,"[Warning: output set to stdout]\n");
output_file = stdout;
}
else {
output_file = fopen(out_file_name,"w");
if(output_file == NULL) {
fprintf(log_file,"[Warning: output set to stdout]\n");
output_file = stdout;
}
}
if(max_intron_length>0) {
if(verbose) fprintf(log_file,"[Warning: set max intron length=%i]\n",max_intron_length);
}
if(ignore_gene_labels) {
if(verbose) fprintf(log_file,"[Warning: ignoring gene labels (column 4)]\n");
}
if(flagged) {
if(verbose) fprintf(log_file,"[Warning: only look at reads flagged 0x800]\n");
}
if(margin>0) {
if(verbose) fprintf(log_file,"[Warning: read margin set to %i]\n", margin);
}
if(verbose) {
for(s = 0; s < 2; s++) if(rev_compl[s]) fprintf(log_file,"[Warning: take reverse complement of read %i]\n", s+1);
fprintf(log_file,"[Warning: stranded = %s]\n", stranded ? "TRUE" : "FALSE (always correct strand)");
if(ignore_gene_labels) fprintf(log_file,"[Warning: ignore gene labels (column 4)]\n");
}
for(i = 0; i < N_READ_TYPES; i++) for(s = 0; s < 2; s++) n_reads[i][s] = 0;
/** initatializing BAM and header **/
bam_input = bam_open(bam_file_name, "r");
header = bam_header_read(bam_input);
if(bam_input == NULL || header == NULL) {
fprintf(log_file,"BAM can't be opened or contains no header, exiting\n");
exit(1);
}
/** reading input from CPS **/
input_file = fopen(cps_file_name, "r");
if(input_file == NULL) {
fprintf(log_file,"CPS can't be opened, exiting\n");
exit(1);
}
/** populating gene structure arrays **/
for(s = 0; s < 2; s++) {
contig_count[s] = (int*) malloc(sizeof(int) * (header->n_targets + ARRAY_MARGIN));
contig_index[s] = (int*) malloc(sizeof(int) * (header->n_targets + ARRAY_MARGIN));
contig_sites[s] = (splice_site**) malloc(sizeof(splice_site*) * (header->n_targets + ARRAY_MARGIN));
if(contig_count[s] == NULL || contig_sites[s] == NULL || contig_index[s] == NULL) {
fprintf(log_file, "Not enought memory, exiting\n");
exit(1);
}
}
for(s = 0; s < 2; s++)
for(i=0; i < header->n_targets; i++)
contig_count[s][i] = contig_index[s][i] = 0;
if(verbose) fprintf(log_file, "Reading %s pass1", cps_file_name);
while(fgets(buff, MAXFILEBUFFLENGTH, input_file)) {
sscanf(buff, "%s %*i %c", &chr[0], &ch);
bam_parse_region(header, chr, &i, &beg, &end);
s = (ch == '+' ? 0 : 1);
if(i < header->n_targets && i>=0) contig_count[s][i]++;
}
for(s = 0; s < 2; s++) {
for(i = 0;i < header->n_targets; i++) {
contig_sites[s][i] = (splice_site*) malloc(sizeof(splice_site) * (contig_count[s][i] + ARRAY_MARGIN));
if(contig_sites[s][i] == NULL) {
fprintf(log_file, "Not enought memory, exiting\n");
exit(1);
}
}
}
if(verbose) fprintf(log_file, "\n");
if(verbose) fprintf(log_file, "Reading %s pass2",cps_file_name);
fseek(input_file, 0, SEEK_SET);
while(fgets(buff, MAXFILEBUFFLENGTH, input_file)) {
sscanf(buff, "%s %i %c %i", &chr[0], &pos, &ch, &label);
bam_parse_region(header, chr, &i, &beg, &end);
s = (ch == '+' ? 0 : 1);
if(i < header->n_targets && i>=0) {
if(contig_index[s][i]>0) {
if(pos < contig_sites[s][i][contig_index[s][i]-1].pos) {
fprintf(log_file, "Splice sites weren't sorted, exiting\n");
exit(1);
}
}
contig_sites[s][i][contig_index[s][i]].pos = pos;
contig_sites[s][i][contig_index[s][i]].label = ignore_gene_labels ? 0 : label;
for(side = 0; side < 2; side++) {
contig_sites[s][i][contig_index[s][i]].count00[side] = 0;
contig_sites[s][i][contig_index[s][i]].count5X[side] = 0;
contig_sites[s][i][contig_index[s][i]].countX3[side] = 0;
contig_sites[s][i][contig_index[s][i]].junctions = NULL;
}
contig_index[s][i]++;
}
}
if(verbose) fprintf(log_file, "\n");
for(s = 0; s < 2; s++)
for(i = 0;i < header->n_targets; i++)
contig_index[s][i] = 0;
/** analysis starts here **/
b = bam_init1();
k = 0;
ref_id_prev = -1;
beg_prev = -1;
while(bam_read1(bam_input, b)>=0) {
c = &b->core;
ref_id = c->tid;
if(ref_id<0) continue;
if(flagged && ((c->flag & 0x800) == 0)) {
n_skipped_reads++;
continue;
}
if(stranded && ((c->flag & BAM_FREAD1) && (c->flag & BAM_FREAD2) || !(c->flag & BAM_FREAD1) && !(c->flag & BAM_FREAD2))) {
n_skipped_reads++;
continue;
}
cigar = bam1_cigar(b);
if(ref_id != ref_id_prev && ref_id_prev >= 0) {
if(contig_index[0][ref_id_prev] + contig_index[1][ref_id_prev] < contig_count[0][ref_id_prev] + contig_count[1][ref_id_prev]) {
if(log_file==stderr) progressbar(1, 1, header->target_name[ref_id_prev], verbose);
}
beg_prev = -1;
}
/*if(ref_id < ref_id_prev) {
fprintf(log_file,"BAM file wasn't sorted, exiting\n");
exit(1);
}*/
ref_id_prev = ref_id;
beg = c->pos + 1;
if(beg < beg_prev) {
fprintf(log_file,"BAM file wasn't sorted, exiting\n");
exit(1);
}
beg_prev = beg;
s = ((c->flag & BAM_FREVERSE)>0);
mapped_strand = (c->flag & BAM_FREAD1) ? (s + rev_compl[0]) & 1 : (s + rev_compl[1]) & 1;
the_end = bam_calend(c, cigar);
for(s = 0; s < 1 + stranded; s++) {
end = beg;
side = (s == mapped_strand) ? 0 : 1;
side *= stranded;
// keep reading until the currect site is on the same chromosome downstream of the read
while(contig_sites[s][ref_id][contig_index[s][ref_id]].pos < beg && contig_index[s][ref_id] < contig_count[s][ref_id]) {
contig_index[s][ref_id]++;
if(log_file==stderr) progressbar(contig_index[0][ref_id]+contig_index[1][ref_id], contig_count[0][ref_id]+contig_count[1][ref_id], header->target_name[ref_id], verbose);
}
read_type = RT_OTHER;
if(contig_index[s][ref_id]<contig_count[s][ref_id]) {
// check if the read is a split read and find its other end
read_type = RT_GENOME;
for(i = 0; i < c->n_cigar; i++) {
offset = cigar[i] >> 4;
switch(cigar[i] & 0x0F) {
case BAM_CMATCH: end += offset; // match to the reference
break;
case BAM_CINS: end += 0; // insertion to the reference, pointer stays unchanged
break;
case BAM_CDEL: end += offset; // deletion from the reference (technically the same as 'N') pointer moves
break;
case BAM_CREF_SKIP: other_end = end + offset;
donor_id = acceptor_id = -INFTY;
if(end - beg < margin) break;
if(the_end - other_end < margin) break;
for(j = contig_index[s][ref_id]; contig_sites[s][ref_id][j].pos <= other_end && j < contig_count[s][ref_id];j++) {
if(contig_sites[s][ref_id][j].pos - end < min_intron_length && min_intron_length > 0) continue;
if(contig_sites[s][ref_id][j].pos - end > max_intron_length && max_intron_length > 0) break;
if(contig_sites[s][ref_id][j].label == contig_sites[s][ref_id][contig_index[s][ref_id]].label) {
if(contig_sites[s][ref_id][j].pos == end - 1) donor_id = j;
if(contig_sites[s][ref_id][j].pos == other_end) acceptor_id = j;
}
}
if(donor_id>0 && acceptor_id>0) {
update_count(&contig_sites[s][ref_id][donor_id].junctions, acceptor_id, side);
contig_sites[s][ref_id][donor_id].count5X[side]++;
contig_sites[s][ref_id][acceptor_id].countX3[side]++;
read_type = RT_KJUNCT;
}
else {
read_type = RT_UJUNCT;
}
end = other_end;
break;
case BAM_CSOFT_CLIP:
case BAM_CHARD_CLIP:
case BAM_CPAD: break;
default: read_type = RT_OTHER;
}
}
if(read_type == RT_GENOME) {
for(j=contig_index[s][ref_id]; beg + margin <= contig_sites[s][ref_id][j].pos && contig_sites[s][ref_id][j].pos < end - margin && j<contig_count[s][ref_id]; j++) {
contig_sites[s][ref_id][j].count00[side]++;
read_type = RT_OVRLAP;
k++;
}
}
}
n_reads[read_type][side]++;
}
n_total_reads++;
if(k>limit_counts && limit_counts>0) break;
}
void profileReads(char* bamFile,
int ignoreSuppAlignments,
int ignoreSecondaryAlignments) {
//
int result = -1;
int supp_check = 0x0;
if (ignoreSuppAlignments) {
supp_check |= BAM_FSUPPLEMENTARY;
}
if (ignoreSecondaryAlignments) {
supp_check |= BAM_FSECONDARY;
}
// helper variables
BGZF* in = 0 ;
bam1_t *b = bam_init1();
bam_hdr_t *h;
// open bam
if ((in = bgzf_open(bamFile, "r")) == 0) {
fprintf(stderr,
"ERROR: Failed to open \"%s\" for reading.\n",
bamFile);
}
else if ((h = bam_hdr_read(in)) == 0) { // read header
fprintf(stderr,
"ERROR: Failed to read BAM header of file \"%s\".\n",
bamFile);
}
else {
// destroy header
bam_hdr_destroy(h);
int line = 0;
int supplementary, secondary;
int mapQual;
int matches, mismatches, qLen;
float pcAln, pcId;
int showStats = 0;
uint8_t *aux_mismatches;
// print header
printf("line\tsupp\tsecondary\tmapQ\tmismatches\tmatches\tqLen\tpcId\tpcAln\n");
// fetch alignments
while ((result = bam_read1(in, b)) >= 0) {
line += 1;
// only primary mappings
if ((b->core.flag & supp_check) != 0) {
if (showStats)
fprintf(stdout, "Rejected %d, non-primary\n", line);
continue;
}
supplementary = (b->core.flag & (1 | BAM_FSUPPLEMENTARY)) != 0;
secondary = (b->core.flag & (1 | BAM_FSECONDARY)) != 0;
// quality
mapQual = b->core.qual;
// bam_aux_get returns 0 if optional NM tag is missing
if ((aux_mismatches = bam_aux_get(b, "NM")))
mismatches = bam_aux2i(aux_mismatches);
else
mismatches = 0;
// length
qLen = bam_cigar2qlen((&b->core)->n_cigar, bam_get_cigar(b));
// percent identity
matches = bam_cigar2matches((&b->core)->n_cigar, bam_get_cigar(b));
pcId = (matches - mismatches) / (float)matches; // percentage as float between 0 to 1
// percent alignment
pcAln = matches / (float)qLen; // percentage as float between 0 to 1
// print read values
printf("%d\t%d\t%d\t%d\t%d\t%d\t%d\t%.4f\t%.4f\n",
line, supplementary, secondary, mapQual, mismatches, matches,
qLen, pcId, pcAln);
}
if (result < -1) {
fprintf(stderr,
"ERROR: retrieval of read no. %d from file \"%s\" failed with code %d.\n",
line, bamFile, result);
}
}
if (in) bgzf_close(in);
bam_destroy1(b);
}